Figure 1From: Elevation of the antifibrotic peptide N-acetyl-seryl-aspartyl-lysyl-proline: a blood pressure-independent beneficial effect of angiotensin I-converting enzyme inhibitorsOverview of angiotensin-converting enzyme (ACE)/ACE2 action and synthesis of bioactive angiotensin peptides. ACE metabolizes angiotensin I into angiotensin II. Angiotensin II is cleaved by aminopeptidase A (APA) into angiotensin III and subsequently angiotensin IV. Angiotensin I is also cleaved by ACE2 into angiotensin-(1-9). Angiotensin-(1-7) is synthesized from angiotensin-(1-9) by ACE or alternatively from angiotensin II by ACE2. These angiotensin peptides bind to specific receptors and exhibit biological functions.Back to article page